Comparison of detached eddy simulation schemes on a subcritical flow around circular cylinder

Considering the requirements of simulating the flow around spray system in ground based icing test facilities, the accuracy of three detached eddy simulation (DES) schemes applied to three-dimensional subcritical flow around circular cylinder was examined through the comparison and analysis of instantaneous flow characteristics and flow statistic parameters. It is found that, from the point of instantaneous flow characterization, the k-ω Reynolds averaged Navier-Stokes (RANS) branch has remarkable influence on the accuracy of shear stress transport k-ω DES (SST k-ω DES). From the point of error range in flow statistics, the length of recirculation region and streamwise minimum velocity are the key parameters which determine the accuracy of numerical simulation on flow around circular cylinder. Compared comprehensively, the instantaneous flow characteristics and flow statistics obtained from SST k-ω DES have well agreements with the data of experiments and large eddy simulation (LES), which thus has the potential of being applied to computing the wake turbulence of spray system in ground based icing test facilities.